1 2 :D expanded when var set 3 true 4 TRUE 5 :U expanded when var undef 6 true 7 TRUE 8 :D skipped if var undef 9 10 :U skipped when var set 11 is set 12 :? only lhs when value true 13 true 14 TRUE 15 :? only rhs when value false 16 false 17 FALSE 18 do not evaluate or expand :? if discarding 19 is set 20 Version=123.456.789 == 123456789 21 Literal=3.4.5 == 3004005 22 We have target specific vars 23 save-dollars: 0 = $ 24 save-dollars: 1 = $$ 25 save-dollars: 2 = $$ 26 save-dollars: False = $ 27 save-dollars: True = $$ 28 save-dollars: false = $ 29 save-dollars: true = $$ 30 save-dollars: Yes = $$ 31 save-dollars: No = $ 32 save-dollars: yes = $$ 33 save-dollars: no = $ 34 save-dollars: On = $$ 35 save-dollars: Off = $ 36 save-dollars: ON = $$ 37 save-dollars: OFF = $ 38 save-dollars: on = $$ 39 save-dollars: off = $ 40 export-appended: env 41 export-appended: env 42 export-appended: env mk 43 parse-dynamic: parse-dynamic parse-dynamic before 44 parse-dynamic: parse-dynamic parse-dynamic after 45 parse-dynamic: parse-dynamic parse-dynamic after 46 varerror-unclosed-1:begin 47 make: in target "varerror-unclosed-2": Unclosed variable "" 48 make: in target "varerror-unclosed-3": Unclosed variable "UNCLOSED" 49 make: in target "varerror-unclosed-4": Unclosed variable "UNCLOSED" 50 make: in target "varerror-unclosed-5": while evaluating variable "UNCLOSED" with value "": Unclosed variable "PATTERN" 51 make: in target "varerror-unclosed-5": while evaluating variable "UNCLOSED" with value "": Unclosed expression, expecting '}' for modifier "M${PATTERN" 52 make: in target "varerror-unclosed-6": Unclosed variable "param" 53 make: in target "varerror-unclosed-6": Unclosed variable "UNCLOSED." 54 55 make: in target "varerror-unclosed-7": Unclosed variable "UNCLOSED.1" 56 make: in target "varerror-unclosed-8": while evaluating variable "UNCLOSED_INDIR_2" with value "${UNCLOSED_INDIR_1}": while evaluating variable "UNCLOSED_INDIR_1" with value "${UNCLOSED_ORIG": Unclosed variable "UNCLOSED_ORIG" 57 target1-flags: we have: one two 58 target2-flags: we have: one two three four 59 exit status 2 60